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Re: [PATCH] Remove gen_binary from combine.c (take 3)

From: Paolo Bonzini <paolo dot bonzini at lu dot unisi dot ch>
To: "Joseph S. Myers" <joseph at codesourcery dot com>, GCC Patches <gcc-patches at gcc dot gnu dot org>
Date: Mon, 21 Mar 2005 19:34:55 +0100
Subject: Re: [PATCH] Remove gen_binary from combine.c (take 3)
References: <4224228B.1020804@lu.unisi.ch> <20050308131419.GA30330@redhat.com> <422DD974.5020400@lu.unisi.ch> <Pine.LNX.4.61.0503202127240.6085@digraph.polyomino.org.uk> <423E2B74.1040802@codesourcery.com> <423E868E.5080603@lu.unisi.ch> <423E9305.9050409@lu.unisi.ch> <Pine.LNX.4.61.0503211654570.13678@digraph.polyomino.org.uk>

I tested on x86_64-unknown-linux-gnu, and found the patch isn't yet suitable for 4.0 branch because it causes regressions:

And I suspect it is a very subtle miscompilation of gcc, because it does not trigger with a cross compiler. I will stare more closely at my patch now, but it would help to have dumps, so that I can compare them with those for a cross compiler.

Paolo

Follow-Ups:
- Re: [PATCH] Remove gen_binary from combine.c (take 3)
  - From: Joseph S. Myers

References:
- [PATCH] Remove gen_binary from combine.c (take 3)
  - From: Paolo Bonzini
- Re: [PATCH] Remove gen_binary from combine.c (take 3)
  - From: Paolo Bonzini
- Re: [PATCH] Remove gen_binary from combine.c (take 3)
  - From: Joseph S. Myers
- Re: [PATCH] Remove gen_binary from combine.c (take 3)
  - From: Mark Mitchell
- Re: [PATCH] Remove gen_binary from combine.c (take 3)
  - From: Paolo Bonzini
- Re: [PATCH] Remove gen_binary from combine.c (take 3)
  - From: Joseph S. Myers

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